Evaporating apparatus.



G. ORDWAY. EVAPOBA'IING APPARATUS. APPLIUATIORFILBD DEO.17,1908.

Patented Des. 7, E909.

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' CHARLES QRDW'AY, or NEW "YORK, n. Y.

eaaaoa.

Specification of Letters Patent.

nvnrona'rme APPARATUS.

Patented Dec. a, race.

, ltpplication filed December 17, 1908. Serial No. eeaoee.

, To all whom it may concern:

Be it known that I, CHARLES OnDwAY, a citizen of the United States, andresident of the city, county, and State of New York, have made certainnew and useful Inventions Relating to Evaporating Apparatus, of whichthe following is a specification, taken in connection with theaccompanying drawing, forming part of the same.

This invention relates to evaporating apparatus and relates especiallyto the construction of evaporators suitable for multiple effect work andcomprising special combined return bends and packing means for the tubesand other features as hereinafter specified.

In the accompanying drawings showing an illustrative form of thisinvention, and in which the same reference numerals refer to similarparts in the several figures, Figure 1 is a vertical longitudinalsection, parts being broken away. Fig. 2 is a similar partial section ona largerscale showing the return bends. Fig; 3 is an end View showinganother form of return bend. Fig. 4: is a longitudinal section thereof.

In the illustrative embodiment of this invention shown in the drawingsthe shell 4 of the effect is preferably formed of uniform diameterthroughout of regular boiler plate construction, the joints being calkedin the regular way, except where such flanges as serve to connect theliquor feed pipe 28, the water drip 27 and so forth, are connected. Thetube sheets 12, 25 are also riveted Within the shell as in boilerconstruction and are spaced apart at the proper distance as well asbeing provided with the desired number of properly spaced holes toaccommodate the evaporating tubes supported in the steam space forheating.

A. suitable feed chamber 37 may be conveniently formed within the bodyof the shell 4L by spacing the tube sheet 25 in from the end of theshell. Also, if desired, a door 41 mounted on suitable hinges, such as39 ivoted to the door by the pins 42 and to the shell end by the pins 40may be provided to give access to the feed chamber, the tube sheet andend connections, this door and its opening in the end flange 35 beingpreferably of such size as to include the entire area of the tube sheetin which the evaporating tubes are spaced. This door may of course betightly held in closed position by any desired means, such for example,as the studs 36 in the end flange 35 cooperating with suitable holes inthe door which is held in position by the cooperating nuts as shown inFig. 2. The vapor chamber 52 is also preferably formed within the shell4: and suitable batlles may be conveniently provided by riveting theannular battle flanges 5, 9 upon the'shell and bolting or otherwisesecuring thereto the sectional baffles 6, 10 so as to leave an opening11 in the inner battle plate and other suitable openings, such as 7, inthe outer compound batl'le plate and liquor drain openings adjacent theshell of the effect. Iuachof the sectional battles overlaps the adjacentones slightly at its upper and.

lower edges, as indicated in the drawing, so as to effectively guide thevapor around the compound battle plates. In this way the battle platesmay be formed sufficiently narrow so that they can be convenientlywithdrawn from the man-hole 2 provided in the end of the head 1 at theouter end of the vapor chamber 52 with which the liquor discharge pipe 3and the vapor discharge 8 communicate.

The tube sheets may be conveniently reinforced by securing theretothroughout the area in which the tubes are located suitable backingplates, such as 26 formed of cast iron or other stifi' material andbolted to the cooperating face of the tube sheet at intervals. Thereturn bolts 19 serve for this purpose and may conveniently have theirthreaded inner ends screwed into the tube sheet to the end of thethreads so that the threaded ends pass loosely through the correspondingholes in the backing plate 26, after which the backing nuts 21 arescrewed home, rigidly holding the backing plate to the tube sheet andleaving the return bolts 19 projecting therefrom. These return bolts mayalso serve to secure the return bends in position and simultaneouslypack the joints around the evaporating tubes in this construction. Thismay be accomplished by forming the integral projecting flanges 58 of thereturn bend 18 encircling the tube ends with suitable inclined annularrecesses around the tubes, the tube sheet being formed with similarrecesses so as to accom modate a gasket of rubber or other materialslipped around each tube end. The return bend when forced into positionby the nut 55 on the end of the return bolt 19 tightens all thesepackings and packs each tube joint. The return bend is preferably formedwith lating liquor and the bolt and-the tube apertures in the returnbend communicating with the tubes are preferably alined therewith andconstricted or formed with inclined edges 56 so as to guide the liquorcentrally into the tube as well as prevent the liquor leaving the tubefrom impinging upon its edge and causing excessive abrasion.

In the arrangement indicated in Figs. 1 and 2 the liquor fed in throughthe feed pipe 28 rises Within the feed chamber so as to enter each oneof the series of feed pipes 29, 33, 34 extending into the same as shownin Fig. 2 so that liquor is simultaneously fed to the caps 43 of eachcoil of the evaporator through the horizontal sections 30, 31, 32 ofthese feed pipes. Liquor from the pipe 30, for instance, passes into andthrough the evaporating tube 17, then through a return bend 18connecting the other end of this tube with the tube 15 below and thenafter passing through the tube 15 passes through the return bend 18connected with the evaporating tube 16 from which it may issue through asuitable discharge cap, such as 24. These feed caps and discharge capsmay of course be formed with similar angular recesses so as to pack thegaskets around the cooperating tubes and have similar constricted tubeapertures communicating with the tubes.

Of course, where a single evaporating tube connects with a series ofsmaller diameter tubes a corresponding change may be made in the shapeand construction of the return bend which may be formed as indicated inFigs. 3 and 4. In this case the projecting flanges of the return bend 45may be formed to inclose the ends of the large evaporating tube 15projecting beyond the tube sheet 12 and also to similarly inclose theends of the plurality of smaller tubes 51 acting in multiple to receivethe liquor therefrom. The return bend may be formed with similarconstricted tube openings to direct the liquor as it passes out of andinto the various tubes and may also be provided with suitably shapedannular recesses in the projecting flanges adjacent the tube openings inwhich gaskets 53 around each of the tubes may be accommodated inconnection, if desired, with similar recesses in the cooperating portionof the tube sheet. This return bend is also indicated as provided withan integral bolt casing 49 through which the return bolt 47 passes toengage the threaded aperture in the tube sheet and force the return bendinto position in connection, if desired, with other bolts 46 passingthrough suitable holes in the return bend and engaging the tube sheet.It is thus apparent that the liquor from the tube 15 will enter thepassage 48 in the return bend and pass into the several tubes 51 inwhich it is distributed in a sufficiently uniform manner under workingconditions. Such return. bends as described are of course very easilyapplied and enable the tubes to be quickly and eflectively packed in thetube sheets. Leakage of air into the tubes of the effect is alsominimized by forming the vfeed chamber 87 within the shell of the effectitself so that any openings in the feed connections or returnconnections in this chamber or in the vapor chamber cannot cause any airleakage into the tubes.

Having described this invention in connection with a number ofillustrative embodiments thereof, to the details of which disclosure theinvention is not of course to be limited, what is claimed as new andwhat is desired to be secured by Letters Patent is set forth in theappended claims.

1. In evaporating apparatus, a riveted and calked shell for an effecthaving substantially uni form diameter, tube sheets provided with spacedtube apertures riveted in said shell adjacent its ends to form a vaporchamber and a feed chamber within said shell ends, tubes in said tubeapertures extending through the intermediate steam space; baflie flangesriveted to said shell within said vapor space, a manhole in said shellcommunicating with said vapor space, sectional ba'lfles removably boltedto said bafl'le flanges and removable through said manhole, the end ofsaid shell adjacent said feed chamber being formed with an inspectionhole of substantially the same area as said tube ends, a hinged doornormally closing said hole, feed pipes and connected feed capscommunicating with the tubes of each coil, backing plates cooperatingwith said tube sheets, return bolts securing said back ing plates andtube sheets together and proj ecting therefrom, return bends havingintegral inclosing casings for said bolts and projecting flangesencircling a plurality of said tubes and constricted tube aperturesalined with said tubes to guide the liquor with respect thereto, therebeing cooperating inclined annular recesses in said projecting flangesand tube sheet around said tubes and gaskets therein to automaticallypack said tubes as said bends are forced home.

2. In evaporating apparatus, a riveted shell for an effect havingsubstantially uniform diameter, tube sheets provided with spaced tubeapertures riveted in said shell adjacent its ends to form a vaporchamber and a feed chamber provided with inspection openings, tubes insaid tube apertures eX tending through the intermediate heating space,bafl'le flanges secured to said shell within said vapor space, sectionalbaffles removably bolted to said baffle flanges and removable throughthe inspection opening in said vapor space, a hinged door normallyclosing the inspection opening in said feeding space and being ofsubstantially the same area as the tube ends, feed connections withinsaid feed chamber and communicating with the tubes of each coil tosupply liquor thereto from said feedchamber, backing plates cooperatingwith said tube sheets, return bolts securing said backing plates andtube sheets together and projecting therefrom, and return bends havingintegral projecting flanges encircling a plurality of said tubes andinclined annular recesses in said flanges and the tube sheets aroundsaid tubes and gaskets therein. to automatically pack said tubes as saidreturn bends are forced home.

In evaporating apparatus, a riveted shell for an effect havingsubstantially uniform diameter, tube sheets provided with spaced tubeapertures secured in said shell adjacent its ends to form a vaporchamber and a feed chamber within said shell ends provided withinspection openings, tubes mounted with their ends in said tubeapertures, battle flanges secured to said shell within said vapor space,sectional battles removably bolted to said baffle flanges and removablethrough the inspection opening in said vapor chamber and a removabledoor of substantially the same area as said tube ends closing theinspection opening in said feed chamber to give access to the tube endsand connections therein and feeding and return connections within saidfeed chamber and communicating with said tubes.

4. In evaporating apparatus, a shell for an effect, tube sheets providedwith spaced tube apertures secured in said shell adjacent its ends toform a vapor chamber and a feed chamber within said shell ends providedwith inspection openings, tubes having their ends mounted in said tubeapertures, a removable door having substantially the same area as saidtube ends mounted on one of the ends of said shell to give access tosaid tube ends and connections and feeding and return connectionscommunicating with said tubes.

5. In evaporating apparatus, a shell for an effect, tube sheets providedwith spaced tube apertures secured in said shell to form a vapor chamberand feed chamber within said shell ends, tubes having their ends in saidtube apertures, a manhole mounted in the end of said shell communicatingwith said vapor chamber, battle flanges secured to said shell withinsaid vapor chamber and sectional baffles removably secured to saidbattle flanges and removable through said manhole.

6. In evaporating apparatus, a shell for an effect, tube sheets providedwith spaced tube apertures secured in said shell adjacent its ends toform a vapor chamber and a feed chamber within said shell, tubes havingtheir ends in said tube apertures, feed pipes and connected feed capscommunicating with the tubes ofeach coil and return bends havingintegral inclosing casings and-pro jecting flanges encircling aplurality of said tubes. and formed with inclined annularrecesses insaid projecting flanges and tube sheets around said tubes and gaskets insaid recesses to automatically pack said tubes as said return bends areforced home.

'7. In evaporating apparatus, a shell for an effect tube sheets providedwith spaced tube apertures secured in said shell adjacent its ends toform a vapor chamber and a feed chamber, tubes having their ends in saidtube apertures, backing plates cooperating with said tube sheets, returnbolts securing said backing plates and tube sheets together andprojecting therefrom, return bends having integral inclosing casings forsaid bolts and projecting flanges encircling a plurality of said tubes,there being cooperating in clined annular recesses in said projectingflanges and tube sheets around said tubes and gaskets therein toautomatically pack said tubes in said tube sheets.

8. In evaporating apparatus, a shell, tube sheets in said shell andsecured thereto, tubes having their ends located in tube apertures insaid tube sheets, backing plates cooperating with said tube sheets,return bolts securing said backing plates and tube sheets together andprojecting therefrom, return bends having integral inclosing casings forsaid bolts and projecting flanges encircling a plurality of said tubesand constricted tube apertures alined with said tubes to guide theliquor with respect thereto, there being cooperating inclined annularrecesses in said projecting flanges and tube sheets around said tubesand gaskets in said recesses to automatically pack said tubes in saidtube sheets.

9. In evaporating apparatus, a rivetedshell for an effect havingsubstantially uniform diameter, tube sheets provided with spaced tubeapertures secured. in said shell adjacent its ends to form a vaporchamber and a feed chamber within the ends of said shell, tubes mountedin said tube apertures, the end of said shell inclosing said feedchamber being provided with an inspection opening of substantially thesame area as the tube ends, a removable door cooperating with saidopening to give access to the tube ends and connections within said feedchamber and feeding and return connections within said feed chamber andcommunicating with said tubes.

10. In evaporating apparatus, a shell for an efiect, tube sheetsprovided with spaced tube apertures secured in said shell adjacent itsends to form a vapor chamber and a feed chamber within the ends of saidshell, tubes mounted in said tube apertures, a removable doorcooperating with the effect end to give access to the tube ends andconnections within 'said feed chamber, return connections withln 831d.feed chamber connectlng sald 'tubes into coils and feeding connectionsWithin said feed chamber comprising depending feed pipes connected witheach of said coils and having their lower ends on substantially the samelevel to receive the liquor supplied to the lower portion of said feedchamber.

11. In evaporating apparatus, a shell for an effect, tube sheetsprovided With spaced tube apertures secured in said shell to form a feedchamber therein, means to give access to said feed chamber and tubeapertures therein, and connections Within said feed chambercommunicating with the tubes and comprising a series of depending feedpipes to dip into the liquor supplied to said feed chamber.

12. In evaporating apparatus, a substanscene? tially cylindricalrivetedshell for an efiect having substantiallyuniform diameter, tube sheetsprovided With spaced tube apertures secured in said shell adjacent itsends to form a vapor chamber and a feed chamber Within the ends of saidshell, tubes secured in said tube apertures, there being an inspectionopening in the end of said shell inclosing said feed chamber ofsubstantially the same area as the tubeends, a removable doorcooperating With said opening to give access to the tube ends andconnections Within said feed chamber and feeding and return connectionsWithin said feed chamber and communlcating W1th said tubes.

CHARLES ORDWAY.

lVitnesses:

JEssIE B. KAY, JAMES H. OA'rLoW.

